Flume 2 Smart Water Monitor vs Heiman Smart Water Leakage Sensor

The Heiman Smart Water Leakage Sensor is the overall winner, on a lower price, a higher owner rating, and a 75 dB on-device alarm with a status light. The Flume 2 Smart Water Monitor still leads on connectivity and integrations, reaching Amazon Alexa, Google Home and Home Assistant.

What each one watches. The Heiman Smart Water Leakage Sensor is a floor puck that only knows about water that touches its own contacts. The Flume 2 Smart Water Monitor reads the home's existing water meter, so it can flag a leak anywhere on the property, including ones that never reach a floor.

No. The Flume 2 Smart Water Monitor has no on-device siren or alert light, so every leak notice arrives through the app. The Heiman Smart Water Leakage Sensor has a 75 dB alarm and a status light that work even without its gateway.

The Flume 2 Smart Water Monitor does. It works with Amazon Alexa, Google Home and Home Assistant. The Heiman Smart Water Leakage Sensor reaches Home Assistant and only partial Samsung SmartThings, with no Alexa, Google Home, Apple HomeKit or Matter support.

Anyone who wants an affordable, waterproof puck with a loud local alarm under a sink, water heater or washing machine, and who is fine adding Heiman's gateway later if they want remote app alerts.

Homeowners who want whole-property leak detection without plumbing work, especially with irrigation or surprise water bills, and who prefer Alexa or Google Home alerts over a physical siren.